App : dayima

如果手机root或用虚拟机, 会提示如图, 无法继续, jadx打开apk, 搜索'运行...',

大姨妈.png

大姨妈2.png

大姨妈4.png

编写xposed

(入门: https://www.cnblogs.com/albertzhangyu/p/12656588.html)
这里只贴出关键类代码

package com.example.dym;

import android.content.Context;
import android.util.Log;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage;
public class dym implements IXposedHookLoadPackage {

    @Override
    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam loadPackageParam) throws Throwable {
        if (loadPackageParam.packageName.equals("com.yoloho.dayima")) {

            XposedHelpers.findAndHookMethod("com.yoloho.libcore.util.f",//类名
                    loadPackageParam.classLoader,//不变
                    "f",//方法名
                    Context.class,//参数类型.class, 有几个写几个
                    new XC_MethodHook() {
                        @Override
                        protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                            XposedBridge.log("-----------方法f--返回false------------");
                            param.setResult(false);
                        }

                    });

            XposedHelpers.findAndHookMethod("com.yoloho.libcore.util.f",//类名
                    loadPackageParam.classLoader,//不变
                    "t",//方法名
                    new XC_MethodHook() {
                        @Override
                        protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                            XposedBridge.log("-----------方法t--返回false------------");
                            param.setResult(false);
                        }


                    });


        }
    }
}

运行, OK, 抓包, OK

大姨妈5.png

================2021-12-13===分割线===========
当遇到加壳的App, 如: hunliji(无法截图)

WX20211213-154600@2x.png

WX20211213-155957@2x.png

jadx打开App, 找到检测root的位置:

WX20211213-154827.png

WX20211213-154940.png

要修改hook代码:

//hunliji--加壳
public class Module implements IXposedHookLoadPackage {
    private static final String TAG = "gantb";//无所谓, 不用改
    public static XC_LoadPackage.LoadPackageParam lpparam = null;
    public static ClassLoader classLoader1 = null;

    @Override
    public void handleLoadPackage(final XC_LoadPackage.LoadPackageParam lpparam) throws Throwable {
        // 这一行修改App包名
        if (lpparam.packageName.equals("me.suncloud.marrymemo")) {
            XposedBridge.log(" has Hooked!");
            XposedBridge.log("inner  => " + lpparam.processName);
            Class ActivityThread = XposedHelpers.findClass("android.app.ActivityThread", lpparam.classLoader);
            XposedBridge.hookAllMethods(ActivityThread, "performLaunchActivity", new XC_MethodHook() {
                @Override
                protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                    super.afterHookedMethod(param);
                    Object mInitialApplication = (Application) XposedHelpers.getObjectField(param.thisObject, "mInitialApplication");
                    ClassLoader finalCL = (ClassLoader) XposedHelpers.callMethod(mInitialApplication, "getClassLoader");
                    XposedBridge.log("found classload is => " + finalCL.toString());
                    //这里修改方法名
                    Class BabyMain = (Class) XposedHelpers.callMethod(finalCL, "findClass", "me.suncloud.marrymemo.fragment.login.zg.ZGRootChecker");
                    XposedBridge.log("found final class is => " + BabyMain.getName().toString());
                    fart(finalCL);
                }
            });
        }


    }

    private void fart(ClassLoader classLoader) {

        //这里修改方法名, 变量
        XposedHelpers.findAndHookMethod("me.suncloud.marrymemo.fragment.login.zg.ZGRootChecker", classLoader, "isDeviceRooted", new XC_MethodHook() {
            @Override
            protected void afterHookedMethod(MethodHookParam param) throws Throwable {
                super.afterHookedMethod(param);
                //这里修改返回值false, 未root
                param.setResult(false);
            }
        });
    }
}

可以正常使用了:

WX20211213-155545@2x.png